The graph gives the death for infectious diseases in the united states between 1900 and 1996

decrease and improve heath care practice

Explanation:

answer; ///i do believe that the correct answer is (b) ///middle colony

powers  are  denied  to the  national governmentin three distinct ways: some  powers, such as the  power  to levy duties on exports or prohibit the freedom of religion, speech, press, or assembly, are expressly  denied  to the  national government  in the  constitution.